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How to Check String is Empty or Not in Dart (Null Safety)?

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  • Difficulty Level : Basic
  • Last Updated : 09 Aug, 2021

We can check a string is empty or not by the String Property isEmpty. If the string is empty then it returns True if the string is not empty then it returns False.

Syntax: String.isEmpty 

Return : True or False.

Example 1:

Dart




// main function start
void main() {
   
    // initialise a string st
    String? st = "";
   
    // print string is empty or not
    print(st.isEmpty);
}

Output:

true

Example 2:

Dart




// main function start
void main() {
   
    // initialise a string st
    String? st = "Geeksforgeeks";
   
    // print string is empty or not
    print(st.isEmpty);
}

 Output:

false

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